Important Questions To Consider While Certifying Your Welders

 

Important Questions To Consider While

If you want to enhance your business profits and establish a reputation in the market you should definitely certify your welders to provide quality services. A team of well trained NDT personnels means great achievement in the field of testing and welding. However, there are several questions that often appear when it comes to getting certified from a certifying board.

So, here are some to make the process easier:

Can an employer choose a particular welding inspector who has previously obtained recognition from Regulatory Authorities?

It is the right of an employer or owner to employ whoever they wish to. They just need to comply with the appropriate standards and regulations proposed by the government. AICIP offers them the opportunity to utilise a nationally recognised, independent certification program to make decisions and assist the responsibilities properly to become a competent person.

Does AICIP insist on mandatory training requirements for a particular field?

No, AICIP has no prerequisites for anyone who wishes to apply for an examination. AICIP has produced a list of competencies for novice inspectors on which the questions are set. It does not have any mandatory requirement.

What is the rough estimate of the examination cost?

The cost of the examination fees is based on the anticipated number of candidates
and conducting the examinations on a national basis. AICIP is independent of all government funding agencies and solely relies on sponsorship to administer the examination.

Will certificates of competency licences be recognised for exemption from AICIP examinations?

AICIP has not been able to confidently state that a person is competent enough based on the wide range and diversity of documents put forward for exemptions. AICIP has not found such a solution for in-service inspectors and thus, has decided that all candidates seeking certification must undertake the examinations.

However, if a person is certified for welding corrosion testing from a foreign country, mutual recognition agreements occur between AICIP and that specific certifying board takes the final decision.

Can a person sit for the Senior Inspector Level without applying for the In-Service Inspector Level?

Candidates must complete the basic In-service Inspector Level before proceeding to the Senior Inspector Level.

When does a re-Certification take effect?

Re-certification becomes a necessity 5 years after examination.

If you want to train your employees to deliver the best services in Melbourne, hire a certified NDT expert who provide all kinds of NDT training.

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Weld Evaluation Of Camshafts Using Ultrasonic Testing

Generally, ultrasonic testing (UT) is used to figure out the quality of brazed joints. With the help of this unique process, evaluating brazing quality becomes simple. It uses a focused transducer, and ultrasonic waves along the radius of the shaft are focused on the brazed joint. By monitoring the amplitude of the echoes returning from the joint position, one can evaluate the brazing quality easily.

When the echo becomes weak, it indicates a strong bond where most of the ultrasonic waves travel through the joint. On the other hand, a strong echo means that there is no mechanical bonding, causing the ultrasonic waves to bounce back at the interface. A reference sample with a known unbonded area can be used to set the ultrasonic machine sensitivity and evaluate the amount or percentage of any flaw in the part.

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Camshafts

Camshafts are typically manufactured by machining cast iron, forged steel or billets down to the desired shape. Some manufacturers have started to produce camshafts by joining cams to shafts with a brazed joint. Due to the force being potentially applied to the brazed joint, quality control is required to ensure brazing quality and that a sufficient percentage of cam is solidly brazed to the shaft. Ultrasonic testing must be conducted only through experts who provide certified non destructive testing in Melbourne.

Camshaft geometry

A camshaft is basically a shaft with cams distributed along its length. Cams can come in different shapes with one common characteristic: there is at least one protuberance found along the circumference, resulting in an irregular shape. A common model is a cam with a nose (lobe), where the brazed joint is not parallel to the outer surface. In such a situation, there is little to no probability of recording an echo from the joint; this is what will be referred to as the uninspectable area of a cam.

Brazed joint evaluation

It is not always necessary to inspect each individual part of the camshaft to control the quality of a production. A statistical analysis can be performed on sampled parts taken from the production line. The same logic applies to the uninspectable area of the cams; a statistical analysis can still be performed by monitoring the percentage of good brazing within the inspectable portion of the cams. When using ultrasounds to monitor the brazed joint quality, the evaluation must be normalized to ratio of inspectable area.

As ultrasonic testing is sensitive to both surface and sub-surface discontinuities, be sure to hire the certified personnel to figure out the flaws properly and end on a positive note.

Significance of Pressure Vessel Inspection

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A pressure vessel contains fluids under intense pressure or vacuum. Due to this feature, a pressure vessel can be potentially dangerous if it fails. There are authorised inspectors for pressure vessels who specify any faults to ensure that the units are safe for use. Pressure vessel inspection is a detailed review of the same to assure that it complies with the technical standards.

Pressure Vessels can be dangerous if faulty

The massive expansion of energy released from a pressure vessel can cause devastating damage. Even a simple compressed air cylinder can claim lives if it explodes. But do you know that pressure vessels are everywhere in our daily life? From refineries to mineral processing plants, dry cleaners, wineries, hospitals, your local tire dealer and even the pressure cooker all fall in the category of pressure vessels. They just differ in size and functionality but have the same working procedures.
However, heavy duty industrial pressure vessels are very complex processing structures. They may weigh hundreds of tons and are connected to a variety of pipelines, other pressure vessels and boilers. AICIP pressure vessel inspector in Melbourne can help you to detect faults in such intricate heavy machineries.

Now, what is AICIP?

AICIP is a non profit organisation in the field of Australian Institute for the Certification of Inspection Personnel. It is a body which certifies NDT inspectors so that they can have the appropriate authorisation to conduct the inspection job. It is incorporated with the Department of Fair Trading (a NSW Consumer Protection Agency) under the Associations Incorporation Act 1984. It has Australian Registered Body status with the Australian Securities Commission.

Manufacturing Pressure Vessels to comply with standards

At the manufacturing phase, it is essential that an experienced pressure vessel designer produces a suitable design. The manufactured vessel must then be inspected through an inspector to determine correct fabrication and welding. For the production purpose, the vessel inspector figures out the manufacturing and load taking capability of the vessel.
The qualified AICIP inspector verifies the entire process as per the Australian standards. It is the inspector’s responsibility to determine future faults of a welding or the material itself. This is why it is recommended to hire an inspection team to work as per the legal requirements and caring for your employees.
For designing and inspecting the volume and pressure, the processes and types of product under pressure are all considered to determine hazard level of the pressure vessel.

Pressure vessel inspection is a crucial part of an industry dealing with heavy duty machineries. If you haven’t made such a consideration yet, call an AICIP certified inspector right away to carry on your business safely.

The Working Processes Of A Good Welding Inspector

Welding InspectionA typical welding inspector is entrusted with the task of overseeing each and every activity as well as duty of a welding staff so as to ensure that all things are in ideal working manner. The job of the professional is making sure that welders conduct their tasks within the fixed deadline and quality specifications. It is also important for him or her to possess advanced knowledge about welding processes and procedures in order to be capable of providing guidance in problematic scenarios.

A good welding inspector is also expected to visually assess the welded products in order to check for room to improve or eliminate deformities. They can even utilise stress equipment for putting stress on weld joints. They are responsible for collecting records of readings from tests for future reference. They primarily work in the field of manufacturing processes and building construction.

Let’s take a quick look at the the different duties performed by professionals of welding inspection in Melbourne:

Welding Inspection

  • Interpretation of purpose as well as requirements of the various standards, codes and specifications.
  • Making sure that a specific process is available, approved and employed in the production.
  • Verifying the availability of enough legitimate welder approvals, and also making sure that only the approved ones are utilised in production.
  • Checking the parent material against markings and documentation.
  • Inspecting the correctness of different welding consumables like gases, fluxes, filler wires, electrodes, consumable inserts, etc.
  • Inspecting that the fit-up, weld preparations and dimensions are according to the specifications.
  • Verifying that the required preheat complies with the particular procedure.
    Assistance & agreement along with preparation of ITPs or Inspection & Test Plans.
  • Surveillance at the time of welding for ensuring compliance with required procedures like preheat, post heat and interpass temperature control requisites.
  • Inspecting to ensure conduction of post weld heat treatment as per specification requirements.
  • Dimensional check and visual inspection of the completed weld against specification drawings and requirements.
  • Utilising various methods of non destructive testing like magnetic particle, ultrasonic inspection, radiography or liquid penetrant to study their results on a specific welding work.
  • Evaluating and preparing inspection reports for a client or employer.
  • Maintaining each and every record of all inspections that they have carried out.

So, basically, these are the things that comprise the regular working processes of a certified welding inspector in Melbourne or anywhere else in Australia. They play a very important role in ensuring the quality & safety of different manufactured products.